Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/g++.dg/concepts/intro4.C @ 131:84e7813d76e9
gcc-8.2
author | mir3636 |
---|---|
date | Thu, 25 Oct 2018 07:37:49 +0900 |
parents | 04ced10e8804 |
children | 1830386684a0 |
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// { dg-do compile { target c++17 } } // { dg-options "-fconcepts" } template<typename ... T> concept bool C1 = true; template<int ... N> concept bool C2 = true; template<typename T> concept bool C3 = __is_class(T); template<typename ... T> concept bool C4() { return true; } template<int N> concept bool C4() { return true; } template<typename T, typename U = int> concept bool C5() { return __is_class(U); } C1{...A, B} void f1() {}; // { dg-error "no matching|wrong number" } C1{A} void f2() {} // { dg-error "cannot match pack|no matching concept" } C2{A, B} void f3() {}; // { dg-error "cannot match pack|no matching concept" } C3{...A} void f4() {}; // { dg-error "cannot match pack|no matching concept" } C4{A} void f5() {}; // { dg-error "no matching concept" } C5{A, B} void f6() {}; int main() { // Defaults should not transfer f6<int>(); // { dg-error "no matching" } return 0; }